EAGER: Development of a Novel Rotating Wind Tunnel for 3D Study of Turbulent Flow

EAGER：开发用于湍流 3D 研究的新型旋转风洞

• 批准号: 2026329
• 负责人: Jun Chen
• 金额: $ 25.92万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2026329&HistoricalAwards=false
• 关键词: EAGER; Development; Novel; Rotating; Wind

Turbulent flows in rotating thermal-fluid systems play a key role in a wide variety of fields, from engineering (e.g., rotating machines, propulsion engines) to geophysics (e.g., ocean currents, atmospheric currents, climate system) to astrophysics (e.g., accretion disks around white dwarfs and freshly formed stars). Yet the effect of rotation on the interplay among forces (i.e., Coriolis force and centrifugal force) acting on fluid particles and turbulence, mean flow features, and solid boundaries is not well understood. This gap in research is fundamentally attributed to the lack of adequate experimental facilities. The principle aim of this project is to develop a rotating experimental facility and advanced volumetric flow diagnostics tools to investigate turbulence physics and facilitate the development/validation of new turbulence models. The project will also encompass significant STEM education and outreach activities, including multiple undergraduate research projects and senior design projects, new curricula development, and research leadership opportunities for women and minority students.This goal of this project is to develop new experimental facilities and instrumentation to study rotating flows and produce benchmark data sets for the geosciences and engineering communities. Our specific aims are to (1) design and manufacture a closed-loop wind tunnel to be mounted on an existing large rotation platform at Purdue University and (2) integrate an onboard Tomographic particle image velocimetry system for volumetric three-dimensional measurements of the rotating turbulence.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

旋转热流体系统中的湍流在许多领域中发挥着关键作用，从工程（例如旋转机器、推进发动机）到地球物理学（例如洋流、大气流、气候系统）再到天体物理学（例如吸积）白矮星和新形成的恒星周围的圆盘）。然而，旋转对作用于流体颗粒和湍流的力（即科里奥利力和离心力）之间相互作用的影响、平均流动特征和固体边界尚不清楚。这种研究差距的根本原因是缺乏足够的实验设施。该项目的主要目标是开发旋转实验设施和先进的体积流量诊断工具，以研究湍流物理学并促进新湍流模型的开发/验证。该项目还将涵盖重要的 STEM 教育和推广活动，包括多个本科生研究项目和高级设计项目、新课程开发以及为女性和少数族裔学生提供研究领导机会。该项目的目标是开发新的实验设施和仪器研究旋转流并为地球科学和工程界生成基准数据集。我们的具体目标是（1）设计和制造一个闭环风洞，安装在普渡大学现有的大型旋转平台上，（2）集成机载断层粒子图像测速系统，用于旋转体的体积三维测量该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。